docs: def __get_value(self, bundleId, languageId, resourceKey, fallback=False):
          """Returns the value for the key. If fallback is ``True``, source
          language value is used if translated value is not available. If the
          key is not found, returns ``None``.
          """
          resourceEntryData = self.__get_resource_entry_data(bundleId=bundleId,
              languageId=languageId, resourceKey=resourceKey, fallback=fallback)
  
          if not resourceEntryData:
              return None
  
          value = resourceEntryData.get(self.__RESPONSE_TRANSLATION_KEY)
  
          return value